package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.mapper.EmployeeMapper;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    // 使用service对象操作
    @Autowired // 自动装配
    private EmployeeService employeeService;

    // 使用mapper对象操作（这里暂时不使用）
    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> employeeLambdaQueryWrapper = new LambdaQueryWrapper<>();
        employeeLambdaQueryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee empl = employeeService.getOne(employeeLambdaQueryWrapper);
        //3、如果没有查询到则返回登录失败结果
        if (empl == null) {
            return R.error("登录失败");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if (!password.equals(empl.getPassword())) {
            return R.error("密码错误");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (empl.getStatus() == 0) {
            return R.error("账户已经被禁用");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", empl.getId());
        return R.success(empl);
    }

    /**
     * 员工退出
     *
     * @param httpServletRequest
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest httpServletRequest) {
        httpServletRequest.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 添加员工
     *
     * @param httpServletRequest
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest httpServletRequest, @RequestBody Employee employee) {
        // 设置默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
        // 把id从session取出来转成long型
        Long emplId = (Long) httpServletRequest.getSession().getAttribute("employee");
//        employee.setCreateUser(emplId);
//        employee.setUpdateUser(emplId);
        employeeService.save(employee);
        return R.success("添加成功");

    }

    /**
     * 员工列表分页查询
     *
     * @param page     页码
     * @param pageSize 页数
     * @param name     名称条件
     * @return
     */
    @GetMapping("/page")
    public R<Page> pageR(Integer page, Integer pageSize, String name) {
//        log.info("页码： {} 条数：{} 名字：{}", page, pageSize, name);
        // 钩爪分页构造器
        Page<Employee> pageInfo = new Page<>(page, pageSize);
        // 构造条件构造器
        LambdaQueryWrapper<Employee> employeeLambdaQueryWrapper = new LambdaQueryWrapper<>();
        employeeLambdaQueryWrapper.like(StringUtils.hasText(name), Employee::getName, name);
        // 执行查询
        employeeService.page(pageInfo, employeeLambdaQueryWrapper);
        return R.success(pageInfo);
    }


    /**
     * 更新员工信息
     *
     * @param httpServletRequest
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest httpServletRequest, @RequestBody Employee employee) {
//        log.info(employee.toString());
        // 获取用户id
//        Long empId = (Long) httpServletRequest.getSession().getAttribute("employee");
//        employee.setUpdateUser(empId);
        // 更新时间
//        employee.setUpdateTime(LocalDateTime.now());
        // 通过id更新数据
        employeeService.updateById(employee);
        return R.success("修改成功");
    }


    /**
     * 根据id查询信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        } else {
            return R.error("没有查询到对应员工信息");
        }

    }
}
